2 files changed, 6 insertions, 0 deletions
diff --git a/src/gallium/drivers/swr/rasterizer/core/backend.cpp b/src/gallium/drivers/swr/rasterizer/core/backend.cpp
index 900849dd3c9..c421179d5eb 100644
--- a/src/gallium/drivers/swr/rasterizer/core/backend.cpp
+++ b/src/gallium/drivers/swr/rasterizer/core/backend.cpp
@@ -470,6 +470,7 @@ void BackendSingleSample(DRAW_CONTEXT *pDC, uint32_t workerId, uint32_t x, uint3
     psContext.pRecipW = work.pRecipW;
     psContext.pSamplePosX = (const float*)&T::MultisampleT::samplePosX;
     psContext.pSamplePosY = (const float*)&T::MultisampleT::samplePosY;
+    psContext.rasterizerSampleCount = T::MultisampleT::numSamples;
 
     for(uint32_t yy = y; yy < y + KNOB_TILE_Y_DIM; yy += SIMD_TILE_Y_DIM)
     {
@@ -660,6 +661,7 @@ void BackendSampleRate(DRAW_CONTEXT *pDC, uint32_t workerId, uint32_t x, uint32_
     psContext.recipDet = work.recipDet;
     psContext.pSamplePosX = (const float*)&T::MultisampleT::samplePosX;
     psContext.pSamplePosY = (const float*)&T::MultisampleT::samplePosY;
+    psContext.rasterizerSampleCount = T::MultisampleT::numSamples;
 
     for (uint32_t yy = y; yy < y + KNOB_TILE_Y_DIM; yy += SIMD_TILE_Y_DIM)
     {
@@ -880,6 +882,8 @@ void BackendPixelRate(DRAW_CONTEXT *pDC, uint32_t workerId, uint32_t x, uint32_t
     psContext.recipDet = work.recipDet;
     psContext.pSamplePosX = (const float*)&T::MultisampleT::samplePosX;
     psContext.pSamplePosY = (const float*)&T::MultisampleT::samplePosY;
+    psContext.rasterizerSampleCount = T::MultisampleT::numSamples;
+
     psContext.sampleIndex = 0;
     
     PixelRateZTestLoop<T> PixelRateZTest(pDC, work, coeffs, state, pDepthBase, pStencilBase, rastState.clipDistanceMask);
diff --git a/src/gallium/drivers/swr/rasterizer/core/state.h b/src/gallium/drivers/swr/rasterizer/core/state.h
index f2ebf92e096..a3616bce069 100644
--- a/src/gallium/drivers/swr/rasterizer/core/state.h
+++ b/src/gallium/drivers/swr/rasterizer/core/state.h
@@ -340,6 +340,8 @@ struct SWR_PS_CONTEXT
     uint32_t primID;            // IN: primitive ID
     uint32_t sampleIndex;       // IN: sampleIndex
 
+    uint32_t rasterizerSampleCount; // IN: sample count used by the rasterizer
+
 };
 
 //////////////////////////////////////////////////////////////////////////